Pub Date : 2017-07-31DOI: 10.1109/CLEOPR.2017.8119002
N. Zhao, Yehui Liu, Yi-bo Wang, Jinggang Peng, Luyun Yang, N. Dai, Haiqing Li, Jinyan Li
In this work, Na+ ions doping into the Yb-doped fiber was proposed to improve the photo-darkening resistance. The results show that the photo-darkening induced excess loss at 702 nm was 37.26dB/m at equilibrium state. More than 50% excess loss was reduced comparing to Yb-doped fiber without Na+ ions.
{"title":"Effective mitigation of photo-darkening By Na+ ions doping in Yb-doped fibers","authors":"N. Zhao, Yehui Liu, Yi-bo Wang, Jinggang Peng, Luyun Yang, N. Dai, Haiqing Li, Jinyan Li","doi":"10.1109/CLEOPR.2017.8119002","DOIUrl":"https://doi.org/10.1109/CLEOPR.2017.8119002","url":null,"abstract":"In this work, Na+ ions doping into the Yb-doped fiber was proposed to improve the photo-darkening resistance. The results show that the photo-darkening induced excess loss at 702 nm was 37.26dB/m at equilibrium state. More than 50% excess loss was reduced comparing to Yb-doped fiber without Na+ ions.","PeriodicalId":6655,"journal":{"name":"2017 Conference on Lasers and Electro-Optics Pacific Rim (CLEO-PR)","volume":"6 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2017-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89259526","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-07-31DOI: 10.1109/CLEOPR.2017.8118807
S. Ohta, S. Makino, T. Fujisawa, T. Sakamoto, T. Matsui, K. Tsujikawa, K. Nakajima, K. Saitoh
We propose a low-loss and low-crosstalk Mach-Zehnder mode multi/demultiplexer for WDM/MDM transmission. A broadband 3dB mode divider, which is also newly devised here, makes it possible to compose Mach-Zehnder filter for “mode” and “wavelength” simultaneously.
{"title":"A proposal of Mach-Zehnder mode multi/demultiplexer for WDM/MDM optical transmission system","authors":"S. Ohta, S. Makino, T. Fujisawa, T. Sakamoto, T. Matsui, K. Tsujikawa, K. Nakajima, K. Saitoh","doi":"10.1109/CLEOPR.2017.8118807","DOIUrl":"https://doi.org/10.1109/CLEOPR.2017.8118807","url":null,"abstract":"We propose a low-loss and low-crosstalk Mach-Zehnder mode multi/demultiplexer for WDM/MDM transmission. A broadband 3dB mode divider, which is also newly devised here, makes it possible to compose Mach-Zehnder filter for “mode” and “wavelength” simultaneously.","PeriodicalId":6655,"journal":{"name":"2017 Conference on Lasers and Electro-Optics Pacific Rim (CLEO-PR)","volume":"25 1","pages":"1-3"},"PeriodicalIF":0.0,"publicationDate":"2017-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88593239","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-07-31DOI: 10.1109/CLEOPR.2017.8118799
Chin Huat Joel Lim, Low Munji, Hyub Lee, V. M. Murukeshan, Young‐Jin Kim
The photoreduction of graphene oxide (GO) films using femtosecond laser direct writing (FsLDW) was investigated at the wavelengths of 343 nm and 515 nm to investigate the contributions of photochemical and photothermal effects in the photoreduction process.
{"title":"Photoreduction of graphene oxides using a femtosecond laser: Photothermal and photochemical contributions","authors":"Chin Huat Joel Lim, Low Munji, Hyub Lee, V. M. Murukeshan, Young‐Jin Kim","doi":"10.1109/CLEOPR.2017.8118799","DOIUrl":"https://doi.org/10.1109/CLEOPR.2017.8118799","url":null,"abstract":"The photoreduction of graphene oxide (GO) films using femtosecond laser direct writing (FsLDW) was investigated at the wavelengths of 343 nm and 515 nm to investigate the contributions of photochemical and photothermal effects in the photoreduction process.","PeriodicalId":6655,"journal":{"name":"2017 Conference on Lasers and Electro-Optics Pacific Rim (CLEO-PR)","volume":"55 1","pages":"1-3"},"PeriodicalIF":0.0,"publicationDate":"2017-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90975602","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-07-31DOI: 10.1109/CLEOPR.2017.8118783
Yueqing Du, X. Shu, Peiyun Cheng
Fast-axis instability in mode-locked fiber lasers is demonstrated numerically. The fast-axis instability manifests as the fast mode transferring its energy to the slow mode when the pulse energy is strong enough. The instability is caused by the strong nonlinear birefringence compensating for the linear birefringence.
{"title":"Vector solitons in mode-locked fiber lasers by fast-axis instability","authors":"Yueqing Du, X. Shu, Peiyun Cheng","doi":"10.1109/CLEOPR.2017.8118783","DOIUrl":"https://doi.org/10.1109/CLEOPR.2017.8118783","url":null,"abstract":"Fast-axis instability in mode-locked fiber lasers is demonstrated numerically. The fast-axis instability manifests as the fast mode transferring its energy to the slow mode when the pulse energy is strong enough. The instability is caused by the strong nonlinear birefringence compensating for the linear birefringence.","PeriodicalId":6655,"journal":{"name":"2017 Conference on Lasers and Electro-Optics Pacific Rim (CLEO-PR)","volume":"87 1","pages":"1-3"},"PeriodicalIF":0.0,"publicationDate":"2017-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90977621","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-07-31DOI: 10.1109/CLEOPR.2017.8118856
Hailiang Zhang, Zhifang Wu, P. Shum, Xuguang Shao, Xuan Quyen Din, Ruoxu Wang, S. Fu, W. Tong, M. Tang
We fabricate a helical long period grating (HLPG) in a multicore fiber. A fiber torsion sensor with directional discrimination based on the HLPG is experimentally demonstrated. The resonant dips offer the ability of simultaneously measurement of torsion and temperature.
{"title":"Helical long period grating in multicore fiber for simultaneous measurement of torsion and temperature","authors":"Hailiang Zhang, Zhifang Wu, P. Shum, Xuguang Shao, Xuan Quyen Din, Ruoxu Wang, S. Fu, W. Tong, M. Tang","doi":"10.1109/CLEOPR.2017.8118856","DOIUrl":"https://doi.org/10.1109/CLEOPR.2017.8118856","url":null,"abstract":"We fabricate a helical long period grating (HLPG) in a multicore fiber. A fiber torsion sensor with directional discrimination based on the HLPG is experimentally demonstrated. The resonant dips offer the ability of simultaneously measurement of torsion and temperature.","PeriodicalId":6655,"journal":{"name":"2017 Conference on Lasers and Electro-Optics Pacific Rim (CLEO-PR)","volume":"15 1","pages":"1-3"},"PeriodicalIF":0.0,"publicationDate":"2017-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88215566","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-07-31DOI: 10.1109/CLEOPR.2017.8119057
Kazuki Uchida, T. Nishiyama, N. Kamada, Y. Onuki, Xu Han, G. Periyanayagam, Hirokazu Sugiyama, Masaki Aikawa, N. Hayasaka, K. Shimomura
We have successfully obtained GalnAsP stripe laser grown on InP/Si substrate by MOVPE. InP/Si substrate was prepared by direct wafer bonding technique using epitaxial grown 1μm thickness InP and silicon substrate. 1.2μm wavelength GalnAsP double heterostructure laser was grown by MOVPE, and stripe laser was fabricated using standard SiO2 deposition and lithography. Room temperature lasing was obtained under pulsed condition.
{"title":"Lasing characteristics of GalnAsP stripe laser integrated on InP/Si substrate","authors":"Kazuki Uchida, T. Nishiyama, N. Kamada, Y. Onuki, Xu Han, G. Periyanayagam, Hirokazu Sugiyama, Masaki Aikawa, N. Hayasaka, K. Shimomura","doi":"10.1109/CLEOPR.2017.8119057","DOIUrl":"https://doi.org/10.1109/CLEOPR.2017.8119057","url":null,"abstract":"We have successfully obtained GalnAsP stripe laser grown on InP/Si substrate by MOVPE. InP/Si substrate was prepared by direct wafer bonding technique using epitaxial grown 1μm thickness InP and silicon substrate. 1.2μm wavelength GalnAsP double heterostructure laser was grown by MOVPE, and stripe laser was fabricated using standard SiO2 deposition and lithography. Room temperature lasing was obtained under pulsed condition.","PeriodicalId":6655,"journal":{"name":"2017 Conference on Lasers and Electro-Optics Pacific Rim (CLEO-PR)","volume":"30 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2017-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82348889","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-07-31DOI: 10.1109/CLEOPR.2017.8118867
Alireza Maleki, D. Coutts, J. Downes, B. Cumming, M. Gu, J. Dawes
A graphene-gold photo-detector produced enhanced photocurrent due to absorbed surface plasmons with p-polarized near IR excitation light, when compared with s-polarized light. Charge doping was characterized by Raman spectroscopy at different positions on the graphene.
{"title":"Graphene photo-detector enhanced by plasmonic coupling","authors":"Alireza Maleki, D. Coutts, J. Downes, B. Cumming, M. Gu, J. Dawes","doi":"10.1109/CLEOPR.2017.8118867","DOIUrl":"https://doi.org/10.1109/CLEOPR.2017.8118867","url":null,"abstract":"A graphene-gold photo-detector produced enhanced photocurrent due to absorbed surface plasmons with p-polarized near IR excitation light, when compared with s-polarized light. Charge doping was characterized by Raman spectroscopy at different positions on the graphene.","PeriodicalId":6655,"journal":{"name":"2017 Conference on Lasers and Electro-Optics Pacific Rim (CLEO-PR)","volume":"34 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2017-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78153882","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-07-31DOI: 10.1109/CLEOPR.2017.8118895
J. Ong, T. Ang, G. Alagappan, Chu Hong Son, S. Lim, C. Png
Silicon nitride fiber-to-waveguide inverse taper edge couplers with double tips are designed and simulated. Double tip edge couplers show a coupling efficiency improvement over single tip couplers at visible wavelengths, which is crucial for loss sensitive quantum optics applications. A loss optimized 2×1 MMI coupler is designed for use as a mode converter in double tip edge couplers.
{"title":"Silicon nitride double-tip fiber-to-waveguide edge couplers at visible wavelengths","authors":"J. Ong, T. Ang, G. Alagappan, Chu Hong Son, S. Lim, C. Png","doi":"10.1109/CLEOPR.2017.8118895","DOIUrl":"https://doi.org/10.1109/CLEOPR.2017.8118895","url":null,"abstract":"Silicon nitride fiber-to-waveguide inverse taper edge couplers with double tips are designed and simulated. Double tip edge couplers show a coupling efficiency improvement over single tip couplers at visible wavelengths, which is crucial for loss sensitive quantum optics applications. A loss optimized 2×1 MMI coupler is designed for use as a mode converter in double tip edge couplers.","PeriodicalId":6655,"journal":{"name":"2017 Conference on Lasers and Electro-Optics Pacific Rim (CLEO-PR)","volume":"8 1","pages":"1-3"},"PeriodicalIF":0.0,"publicationDate":"2017-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75205543","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-07-31DOI: 10.1109/CLEOPR.2017.8118736
Yinping Liu, Lin Ma, Jiangbing Du, Zuyuan He
We propose a novel FOCS based on polarization diversity and a real-time state of polarization (SOP) measurement to eliminate the degradation of the Faraday effect and determine the actual rotation angle of the sensing fiber.
{"title":"Birefringence variation independent fiber-optic current sensor based on polarization diversity and real-time SOP measurement","authors":"Yinping Liu, Lin Ma, Jiangbing Du, Zuyuan He","doi":"10.1109/CLEOPR.2017.8118736","DOIUrl":"https://doi.org/10.1109/CLEOPR.2017.8118736","url":null,"abstract":"We propose a novel FOCS based on polarization diversity and a real-time state of polarization (SOP) measurement to eliminate the degradation of the Faraday effect and determine the actual rotation angle of the sensing fiber.","PeriodicalId":6655,"journal":{"name":"2017 Conference on Lasers and Electro-Optics Pacific Rim (CLEO-PR)","volume":"29 1","pages":"1-3"},"PeriodicalIF":0.0,"publicationDate":"2017-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78891787","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-07-31DOI: 10.1109/CLEOPR.2017.8119051
A. Chiba, Nobuhiro Kobayashi, Yuta Moteki, T. Sakamoto, K. Takada
We demonstrate optical frequency comb generation using an optical I-Q modulator. By adopting the modulation scheme such as double-sideband suppressed-carrier modulation, frequency spacing of the generated comb has broadened to 20 GHz, corresponding to double of driving RF signal frequency.
{"title":"Generation of wide frequency-spacing optical frequency comb composed of odd/even multiple harmonics","authors":"A. Chiba, Nobuhiro Kobayashi, Yuta Moteki, T. Sakamoto, K. Takada","doi":"10.1109/CLEOPR.2017.8119051","DOIUrl":"https://doi.org/10.1109/CLEOPR.2017.8119051","url":null,"abstract":"We demonstrate optical frequency comb generation using an optical I-Q modulator. By adopting the modulation scheme such as double-sideband suppressed-carrier modulation, frequency spacing of the generated comb has broadened to 20 GHz, corresponding to double of driving RF signal frequency.","PeriodicalId":6655,"journal":{"name":"2017 Conference on Lasers and Electro-Optics Pacific Rim (CLEO-PR)","volume":"11 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2017-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80568899","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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